方案一:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>css</title> <style> /* 常见的水平垂直居中实现方案一 */ .father { display: flex; justify-content: center; /* 定义了项目在主轴上的对齐方式 */ align-items: center; /* 定义项目在交叉轴上的对齐方式 */ width: 100px; height: 100px; background-color: red; } .son { width: 60px; height: 60px; background-color: green; } </style> </head> <body> <div class="father"> <div class="son"></div> </div> </body> </html>
效果图:
方案二:
/* 常见的水平垂直居中实现方案二 */ .father { /* 绝对定位配合margin:auto的实现方案 */ position: relative; width: 100px; height: 100px; background-color: red; } .son { position: absolute; top: 0; left: 0; bottom: 0; right: 0; margin: auto; width: 60px; height: 60px; background-color: green; }
方案三:
/* 常见的水平垂直居中实现方案三 */ .father { /* 绝对定位配合transform实现 */ position: relative; width: 100px; height: 100px; background-color: red; } .son { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 60px; height: 60px; background-color: green; }
标签:居中,面试题,color,前端,100px,60px,height,width,background From: https://www.cnblogs.com/huguo/p/17385549.html